Perfect Aire Travel Humidifier Personal travel micro mist ultrasonic humidifier. Provides up to 40% greater output and 25% greater room coverage. Water vapor particles are 70% to 80% smaller for quicker air dispersion and less condensation on and around the unit. Uses a variety of water bottles as a water tank water bottle not included . Produces visible cool mist, no filter to replace. Features adjustable output levels, auto shut-off, 360-degree adjustable output direction, water fill indicator, and whisper quiet motor. Capacity Varies, Coverage Area Small Size Room, Settings Adjustable, Width 6-3/4 In., Height 4-1/2 In., Depth 6 In., Color White, Run Time 2 to 6 Hrs., Output Per Day 0.95 Gal., Voltage 120V, Pkg Qty 1, Package Type Box